US4483042A - Locking device for trailing wheels of a wheeled carriage - Google Patents
Locking device for trailing wheels of a wheeled carriage Download PDFInfo
- Publication number
- US4483042A US4483042A US06/420,809 US42080982A US4483042A US 4483042 A US4483042 A US 4483042A US 42080982 A US42080982 A US 42080982A US 4483042 A US4483042 A US 4483042A
- Authority
- US
- United States
- Prior art keywords
- locking
- axis
- wheeled carriage
- rotation
- locking device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/02—Castors in general; Anti-clogging castors with disengageable swivel action, i.e. comprising a swivel locking mechanism
Definitions
- This invention relates to a device for locking the trailing wheels of a wheeled carriage.
- At least the forward trailing wheels are mounted on the frame for pivotal movement about their vertical axes so as to facilitate the steering movements of the carriage, particularly for negotiating very close curves.
- the stationary condition of the carriage can be reliably ensured only if the pivotably mounted trailing wheels are locked in a predetermined position, preferably in their straight-running position.
- This locking of the trailing wheels in their straight-running position is of particular importance in the case of the wheeled frame of an infant's carriage or perambulator, as a child occupying the perambulator might by its see-saw movements cause the carriage to turn around the wheels to which the locking brakes are applied, resulting in the danger of the perambulator tipping over in the case for instance of a sloping ground surface.
- a locking device for locking the trailing wheels of a wheeled carriage in the straight running position, wherein the trailing wheels have an axis of rotation and are mounted for pivotal steering movement about a vertical axis extending perpendicular to the axis of rotation, but not intersecting it, wherein a support member carrying the axis of rotation of the trailing wheels is connected to a vertically extending sleeve mounted for rotation about the vertical axis in a concentrically surrounding cylindrical recess in the wheeled carriage, and wherein a resiliently deformable plug, extending through the recess from above and having a disk-shaped enlarged head portion engaging the rim of the upper end face of the recess, is non-rotatably connected to the sleeve, the improvement comprising a substantially vertically extending engagement surface formed on the disk-shaped head portion of the plug and a locking member pivotally mounted on the wheeled carriage for positive locking engagement with the engagement surface to thereby lock the wheel against pivotal
- the locking device is formed in a structurally simple and thus inexpensive manner by the vertical engagement surface integrally formed with the disk-shaped head portion of the plug and an associated locking member mounted on the carriage adjacent the engagement surface for pivotal movement into and out of a locking position, in which it is in engagement with the vertical engagement surface so as to prevent the plug, and thus the sleeve non-rotatably connected thereto, from rotating.
- the two members of the locking device are formed as injection-moulded components, with the engagement surface being formed in a structurally simple and thus inexpensive manner as an integral part of the plug provided for the pivotal mounting of the trailing wheels.
- FIG. 1 shows an elevational side view of a trailing wheel in combination with the locking device
- FIG. 2 shows a top plan view of the locking device of FIG. 1.
- FIG. 1 Shown in FIG. 1 is a trailing wheel 1 mounted on a wheeled carriage 2 for pivotal movement about an upright axis by means of a support member 3, in which wheel 1 is rotatably mounted about its axis.
- FIG. 1 shows only the end portions of two struts of carriage 2, to which a suitably formed injection-moulded member 10 is attached.
- Support member 3 may be formed in the shape of a fork and is connected to a substantially vertically extending sleeve 4.
- Sleeve 4 extends into a cylindrical recess 5 in injection-moulded member 10, in which it may be supported by ball bearings (not shown) for low-resistance rotation about the upright axis.
- plug 6 For securing sleeve 4 and thus support member 3 to injection-moulded member 10 there is provided an only partially shown plug 6 having an enlarged disk-shaped head portion 7 at its upper end.
- plug 6, which is of a resiliently deformable material, is introduced into sleeve 4 from above until a resiliently expandable lower end portion (not shown) of plug 6 engages the lower rim of sleeve 4.
- disk-shaped head portion 7 is in engagement with the upper rim of cylindrical recess 5 of injection-moulded member 10
- sleeve 4 is thus retained within injection-moulded member 10 and prevented from dropping out of cylindrical recess 5.
- plug 6 results in the latter being non-rotatably connected to sleeve 4 in a formfit and/or frictional fit. This results in disk-shaped head portion 7 being rotated relative to injection-moulded member 10 on pivotal movements of trailing wheel 1 about the upright axis.
- the locking device itself comprises a flange 13 extending in a substantially vertical direction from the top surface of head portion 7 and forming an engagement surface 8 lying in a substantially vertical plane. Adjacent head portion 7, the upper surface of injection-moulded member 10 is provided with a pair of substantially vertically extending parallel lugs 11 defining a groove 12 therebetween.
- a rod member 17 having a substantially circular cross-sectional shape and forming a part of a locking member 9 is adapted to be press-fitted into groove 12 from above, the resiliency of lugs 11 and the dimensions of rod member 17 and groove 12 being selected such that after press-fitting rod member 17 into groove 12, locking member 9 is mounted between lugs 11 for pivotal movement about a horizontal axis and retained thereby, so that considerable force is required for withdrawing it from groove 12.
- locking member 9 comprises a further rod member 16 connected to first rod member 17 by lateral rod members 14, 15, said further rod member 16 being adapted on pivoting locking member 9 into a substantially horizontal plane to engage vertical engagement surface 8.
- trailing wheel 1 is prevented from pivoting about the upright axis in the locking position.
- a grip portion 18 Integrally formed with locking member 9 is a grip portion 18 by means of which locking member 9 is readily pivoted into and out of the locking position.
- rod members 14 to 17 of locking member 9 are arranged in a trapezoidal configuration in this embodiment. This is due to the fact that the strut of carriage 2, to which injection-moulded member 10 is attached, does not extend in the longitudinal direction of the frame, i.e. in the straight-running direction, but at an angle thereto.
- the rod members of locking member 9 may of course also be arranged in a rectangular or any other suitable configuration if trailing wheel 1 in its straight-running position is aligned with the strut 2 of carriage 2 or assumes any other angular position with respect thereto.
- engagement surface 8 and locking member 9, or groove 12, respectively are located substantially behind one another in the direction of travel, this represents only one of several possible arrangements.
- the named parts of the locking device may of course also be arranged side-by-side in the transverse direction of the carriage, provided they are still capable of achieving the reliable locking action aimed at by the invention.
- member 10, plug 6 and locking member 9 are preferably formed as injection-moulded members.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
Description
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3137433A DE3137433C2 (en) | 1981-09-21 | 1981-09-21 | Locking device for trailing wheels of a chassis |
DE3137433 | 1981-09-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
US4483042A true US4483042A (en) | 1984-11-20 |
Family
ID=6142195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/420,809 Expired - Fee Related US4483042A (en) | 1981-09-21 | 1982-09-21 | Locking device for trailing wheels of a wheeled carriage |
Country Status (2)
Country | Link |
---|---|
US (1) | US4483042A (en) |
DE (1) | DE3137433C2 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4608729A (en) * | 1984-10-29 | 1986-09-02 | Huang Yung H | Lockable steering structure having a vertically slidable locking block |
US4684148A (en) * | 1985-09-12 | 1987-08-04 | Peg Perego-Pines S.P.A. | Perambulator |
US4731899A (en) * | 1986-07-18 | 1988-03-22 | Huang Yung Ho | Rotary roller set directional control device |
US5967535A (en) * | 1997-08-14 | 1999-10-19 | Graco Children's Products Inc. | Swivel wheel mount |
US5983614A (en) * | 1997-12-12 | 1999-11-16 | Snapper, Inc. | Lockable front wheel swivel for lawn mowers |
US20060103114A1 (en) * | 2004-11-12 | 2006-05-18 | Link Treasure Limited | Structure for swiveling and anchoring the front wheel of a tricycle |
US7300063B1 (en) * | 2005-03-28 | 2007-11-27 | Ivo Prizmich | Vehicle dolly to enable the rolling transportation of a damaged vehicle |
USD882703S1 (en) | 2018-01-19 | 2020-04-28 | Dynacraft Bsc, Inc. | UTV ride-on toy |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3519855A1 (en) * | 1985-06-03 | 1986-12-04 | PEG-Perego-Pines Deutschland GmbH, 8060 Dachau | Child's pram |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US740267A (en) * | 1903-07-20 | 1903-09-29 | Fannie Gamble | Caster. |
US1555839A (en) * | 1921-11-29 | 1925-10-06 | Surgeon S Specialty Company | Bed caster and the like |
US2434863A (en) * | 1943-07-30 | 1948-01-20 | Harman R Brown | Caster |
US3636586A (en) * | 1969-12-11 | 1972-01-25 | American Hospital Supply Corp | Caster and swivel lock assembly |
-
1981
- 1981-09-21 DE DE3137433A patent/DE3137433C2/en not_active Expired
-
1982
- 1982-09-21 US US06/420,809 patent/US4483042A/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US740267A (en) * | 1903-07-20 | 1903-09-29 | Fannie Gamble | Caster. |
US1555839A (en) * | 1921-11-29 | 1925-10-06 | Surgeon S Specialty Company | Bed caster and the like |
US2434863A (en) * | 1943-07-30 | 1948-01-20 | Harman R Brown | Caster |
US3636586A (en) * | 1969-12-11 | 1972-01-25 | American Hospital Supply Corp | Caster and swivel lock assembly |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4608729A (en) * | 1984-10-29 | 1986-09-02 | Huang Yung H | Lockable steering structure having a vertically slidable locking block |
US4684148A (en) * | 1985-09-12 | 1987-08-04 | Peg Perego-Pines S.P.A. | Perambulator |
US4731899A (en) * | 1986-07-18 | 1988-03-22 | Huang Yung Ho | Rotary roller set directional control device |
US5967535A (en) * | 1997-08-14 | 1999-10-19 | Graco Children's Products Inc. | Swivel wheel mount |
US5983614A (en) * | 1997-12-12 | 1999-11-16 | Snapper, Inc. | Lockable front wheel swivel for lawn mowers |
US20060103114A1 (en) * | 2004-11-12 | 2006-05-18 | Link Treasure Limited | Structure for swiveling and anchoring the front wheel of a tricycle |
US7300063B1 (en) * | 2005-03-28 | 2007-11-27 | Ivo Prizmich | Vehicle dolly to enable the rolling transportation of a damaged vehicle |
USD882703S1 (en) | 2018-01-19 | 2020-04-28 | Dynacraft Bsc, Inc. | UTV ride-on toy |
USD882702S1 (en) | 2018-01-19 | 2020-04-28 | Dynacraft Bsc, Inc. | UTV ride-on toy |
Also Published As
Publication number | Publication date |
---|---|
DE3137433C2 (en) | 1983-11-24 |
DE3137433A1 (en) | 1983-04-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: PEG PEREGO-PINES DEUTSCHLAND GMBH, INGOLSTADTER ST Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GLASER, DIETER;REEL/FRAME:004289/0058 Effective date: 19840604 Owner name: PEG PEREGO-PINES DEUTSCHLAND GMBH,GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GLASER, DIETER;REEL/FRAME:004289/0058 Effective date: 19840604 |
|
AS | Assignment |
Owner name: PEG PEREGO PINES S.P.A., VIA DE GASPERI, 50, I-200 Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PEG PEREGO-PINES DEUTSCHLAND GMBH;REEL/FRAME:004677/0267 Effective date: 19870121 |
|
FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FEPP | Fee payment procedure |
Free format text: PAT HLDR NO LONGER CLAIMS SMALL ENT STAT AS SMALL BUSINESS (ORIGINAL EVENT CODE: LSM2); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 19921122 |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |